Recent content by UdayRB

BigH, Thanks for your comments

BigH: This is for a highrise building project. The load is at the shear wall foundation. The bottom of the pile cap is at about +4'MSL. Augercast piles are being considered for the project. These piles will terminate in very dense sand 50+blf SPT at either about -60'(below the upper very soft...

Focht3, E-mail to uday@bhate-eng.com. Thanks.

This relates to foundation support conditions for a project. I was contacted by a client after the local geotech informed him that the site was unsuitable for foundation placement. They did 5 borings at the site. The summary is as follows: Elev> +10 to -22' Medium to dense sands SPT 22 to 76...

Thanks. Unfortunately, I was not very successful in finding much data of the consolidation properties of this clay on the internet. I'll keep digging.

I am looking for a copy of "Design and Construction of augercast piles in Florida". I would also be interested in other references regarding design of augercast piles.

I am looking for consolidation data, particularly any preconsolidation history, for marine clay deposits in the Pensacola area. These soils are at a depth of about 100' to 145' below MSL. Any references or actual lab data information would be appreciated.

Just as with any foundation system, Geopiers must be used with proper engineering judgement. We have seen instances where geopiers are being sold as a cure-all for all subsurface problems. On one project in Mississippi with very soft normally consolidated saturated clays to a depth of about 30'...

The piles should be installed by driving as opposed to jetting. If the subsurface strata consists of silt or dirty sands, jetting will cause sufficient disturbance and cavitation in the perimeter without post installation densification of the surrounding strata to "grab" the pile...

Focht3, Thanks for the suggestion.

Does anyone have a standard classroom question/answer test form for field technicians? Say level I one and II etc.

One other comment relative to the CBR and unit weight discussed in my previous note. Due to extreme seasonal weather changes, the CBR test would have to simulate potential for extreme drying of the subgrade. Althouth, the subgrade is covered with the road base and pavement, there is a...

The specified minimum dry density is often for the purposes of precluding the use of low density silts (which compact with a very high void ratio/optimum moisture content). This is often the case with with micaceous silts. These soils are very moisture sensitive and with a low CBR value. In a...

I suggest you refer to "Correction for Coarse Particle in Soil Compaction Test" AASHTO T-224 (1996) method.

The thickness of the subbase will be a function of the seasonal moisture changes and possibly the depth to groundwater level and the water level fluctuations. It will also be a function of the in-place soil moisture profile. Typically, however, the lime treated subbase is installed to depth...